Remove Duplicate Rows from Excel / CSV
Upload your file, choose column(s), and download a cleaned version instantly.
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How to Remove Duplicates from CSV or Excel Online
Step 1: Upload File
Upload your Excel (.xlsx) or CSV file. Drag and drop or click to select from your device.
Step 2: Select Columns
Enter the column names to check for duplicates. Leave blank to check all columns together.
Step 3: Download Clean File
Click Clean File and download your deduplicated CSV instantly. No signup, no waiting.
Why Remove Duplicate Rows from CSV or Excel?
Duplicate rows in CSV or Excel is a most common issue found in sheets prepared manually by users for the daily basis work. However, it is very time consuming to fix manually when there are thousands or lakhs of rows or records in the sheets. As such fixing records manually turns out to be a difficult tasks for any user. To overcome this problem, this feature is introduced in our website so that any user can polish the records properly with the help of this tool without any effort.
Prevent ERP Import Errors
Duplicate customer codes, employee IDs or invoice numbers cause import rejections in SAP, Oracle, Tally and other ERP systems.
Clean CRM Data
Duplicate contact records in Salesforce, HubSpot or Zoho CRM cause confusion and incorrect reporting.
Fix Database Imports
Primary key violations and unique constraint errors in MySQL, PostgreSQL or SQL Server happen because of duplicate rows in CSV files.
Improve Data Accuracy
Duplicate records inflate counts, distort totals and make reports unreliable. Clean data leads to better business decisions.
No Signup Required
Upload your file and download the cleaned version instantly. No account, no email, no registration needed.
Privacy Safe
Your files are processed temporarily and never stored on our server. Your data stays private.
Common Use Cases
- Customer Master Data — Remove duplicate customer codes or account numbers before uploading into SAP or Oracle.
- Employee Records — Clean duplicate employee IDs from HR export files before HRM system import.
- Sales Data — Deduplicate invoice numbers or order IDs in sales reports before database import.
- Contact Lists — Remove duplicate email addresses or phone numbers from marketing lists.
- Inventory Files — Clean duplicate product codes or SKUs from inventory export files.
- Route Master — Remove duplicate route entries before uploading into logistics or delivery systems.
Frequently Asked Questions
How does the duplicate remover work?
Upload your Excel or CSV file, enter the column names to check, and click Clean File. The tool compares rows based on the columns you selected and removes any rows that are exact duplicates, keeping only the first occurrence.
Can I remove duplicates based on a specific column only?
Yes. Enter the column name (or multiple column names separated by commas) in the Column Names field. The tool will check for duplicates only in those columns. If you leave it blank, it checks all columns together.
Is duplicate removal case sensitive?
By default the match is case insensitive. Enable the Case Sensitive Match option if you need exact case matching — for example, treating "ABC" and "abc" as different values.
What file formats are supported?
The tool supports Excel (.xlsx) and CSV (.csv) files. Upload your file in either format and download the cleaned version as a CSV file.
Is my file data safe?
Yes. Files are processed temporarily on our server and deleted immediately after processing. We never store, read or share your file contents.
Is this tool free?
Yes, completely free. No subscription, no hidden charges, and no limit on how many times you can use it.